Salmonella Typhi Drug Action Analysis
The question requires identifying the antibiotic from the given options that shows no efficacy against Salmonella typhi, the causative agent of typhoid fever.
Antibiotic Efficacy Against Salmonella Typhi
- Amoxicillin: Demonstrates antibacterial activity effective against Salmonella typhi.
- Co-trimoxazole: Exhibits action against Salmonella typhi.
- Erythromycin: Possesses activity against Salmonella typhi.
- Doxycycline: Is identified as having NO therapeutic action against Salmonella typhi in the context of this question.
Consequently, Doxycycline is the correct choice as the drug lacking action against Salmonella typhi.
Important Questions from Bacterial Infections
Which of the following are major criteria under the Jones Criteria for Acute Rheumatic Fever?
1. Chorea
2. Erythema Marginatum
3. Subcutaneous Nodules
4. Polyarthralgia
Select the correct answer using the code given below:
- Whipple's disease is characterized by the infiltration of small intestinal mucosa by 'foamy' macrophages. Which one of the following histological stains is characteristically used to stain them?
- A young male presented with recent onset urethral discharge and dysuria. On examination, the discharge was profuse and purulent. Microscopy of smears from the discharge revealed Gram-negative diplococci. What is the likely diagnosis?
- Cat-scratch disease is caused by infection of which of the following organisms?
Which of the following drugs is/are useful in the treatment of Listeria monocytogenes infection?
1. Ceftriaxone
2. Gentamicin
3. Ampicillin
4. Sulfamethoxazole
Select the correct answer using the code given below.
